“The men sport earmuffs and digital camouflage cargo shorts bought on clearance, and their beer bellies hang over gun belts stocked with pistols and extra clips. Lunch was at a diner where every overstuffed sandwich came with a side of soup — plus somebody’s wife made brownies.” Gus Garcia-Roberts takes you behind the scenes in one of several training camps where for $525, you can learn how to fight terrorists. (I’d pay twice that to figure out a way to deal with web commenters.)